I'm trying to make the fans of my dell alienware m15r3 and m14xr2 Works as Windows in my ubuntu 20.04, I can successfully load the dell-smm-hwmon by

Sudo modprobe dell-smm-hwmon force=1 or dell-smm-hwmon ignore_dmi=1

Then i able to change the fan speed using the i8kutils or manually echo over the pwm without need to use a trick to try to disable the bios control.

The problem that I have is that at max speed the module is only putting my fans at 4000 rpm max, but my both alienware laptop have a max fan speed of 6200 rpm (performance/turbo mode)

So doing:

i8kfan 1 0 -> 0 rpm
i8kfan 1 1 -> 2000 rpm
i8kfan 1 2 -> 4000 rpm

also, if I try to change it using the echo over the pwm1 for example:

echo 255 >> pwm1 -> 4000 rpm

I already try to load the module with the fan_max=3 but not luck max speed 4000 rpm.

Do you know what can I do to solve this and make my fans max speed be the real speed 6200 rpm?